Wrench.



H. H. HEUERMAN & H. HUNTEMAN.

WRENCH.

APPLICATION FILED SEPT. 30, 1913. I

1 097 096 I Patented May 19, 1914.

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HENRY H. HEUERMAN AND HENRY HUNTEMAN, OF HIL LSBO'R O, OREGON.

WRENCH.

Specification of Letters Patent.

Patented May 19, 1914.

Application filed September 30, 1913. Serial No. 792,631.

To all whom it may concern:

Be it known that we, HENRY H. HEUER- MAN and HENRY HUNTEMAN, citizens of the United States, residing at Hillsboro, in the county of \Vashington and State of Oregon, have invented certain new and useful Improvements in Wrenches, of which the following is a specification.

The wrench which is the subject matter of the present application for patent is designed for grinding valves on their seats, it

being constructed to grip the valve 'to enable the same to be rotated on its seat for the purpose stated.

The object of the invention is to provide a simple and efficient wrench of the kind stated, and one having novel and improved means for adjusting the jaws to enable the wrench to be applied to difierent sized valves.

In order that the invention may be better understood, reference is had to the accompanying drawing, in which-'- Figure l is an elevation of the wrench. Fig. 2 is a vertical section on the line 22 of Fig. 1. Fig. 3 is an end view of the wrench. Fig. 4 is a horizontal section on the line 4.4: of Fig. l.

Referring specifically to the'drawing, the

shank 5 of the wrench is a stem of suitable length having at one end a cylindrical'enlargement 6 forming the wrench head. .1 he other end of the shank has a tang 7 for insertion into a suitable toolwhereby the valve to be ground is turned after supplying the wrench to the latter.

The head 6 has a transverse passage 8 in which are slidably mounted, side by side, the shanks 9 of valve engaging studs 10. The

studs are on one end of the shanks, and saidends project from opposite sides of the head to locate the'studs outside the latter on opposite sides thereof. The studs may be spread or brought closer together by sliding the shanks thereof in opposite directions. This adjustment is effected bya pinion 11 which is in mesh with rack-teeth 12 on the opposite sides of the pinion, so that when the pinion is rotated, the shanks are caused to travel simultaneousin opposite directions.

The pinion 11 is carried on the inner end of a stud 13 rotatably mounted in a central aperture in the end of the head6, said aperture opening into the passage 8. The outer end of the stud has a transverse kerf 14; in order that a screw driver may be used for turning. the stud to rotate the pinion.

The'studs 10 extend from depending end portions 15 of the shanks 9, and in order that the studs may be drawn as closely together as possible, the opposite sides of the head have recesses 16 in which the end portions 15 seat at the limit of the inward adjustment of the studs. In order to securely lock the shanks 9 so that the adjustment of the studs 10 may not be disturbed, the head is split longitudinally from the shank 5 to the passage 8, as indicated at 17. This split is parallel to the plane'of the shanks 9, and they are clamped together in the passageS in adjusted position 'upon tightening up a screw 18 passing through the split portions of the shank 5. This screw passes loosely through that portion of the head which is on one side of the slit, and it is threaded into that portion of the head on the other side of the slit. Thus, when the screw is turned in one direction, the two portions of the head are drawn together to clamp the shanks 9, and when the screw is turned in the opposite direction, said portions spread-and release the shanks 9.

We claim: A wrench comprising a shank havlng a head provided with a transverse passage and a longitudinal split extending fromsaid passage rearward to the shank, said head also having a central longitudinal aperture extending from its outer end to the passage, means for drawing the split portions of the head togethen-shanks slidably mounted side by side in the transverse I passage and projecting from opposite sides of the head, the projecting ends of the shanks having spanner studs, rack teeth on the bottom of the slidable shanks, the rack teeth of the respective shanks being spaced apart, a pinion -mounted in the transverse passage beneath the shanks and located between the rack In testimony whereof we afiixour signateeth thereof and in mesh therewith, and tures in presence of two witnesses.

means for operating the pinion, said means HENRY H. HEUERMAN. comprising a stud mounted in the aforesaid HENRY HUN TEMAN. aperture and projecting from the outer end Witnesses:

of the head, the inner end of the stud being J. C. KURATLI,

connected to the pinion. JENNm HORNEGKER. 

